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Products & Platforms

Products Mathew built and shipped at Frontiers Market and at Firefly Events, co-founded by Mathew Dostal and Don Matthews, plus the AI crew and tooling we're building right now, in the open.

Where this work has shipped

Hertz
Wayfair
Costco
Chick-fil-A
DanCenter
Kohl's
NV Energy

6,000% throughput increase (Hertz) · $5M+ supply-chain savings contribution (Wayfair — one of several initiatives)

Separate product · Start here

The Audit Report: Know Where You Actually Stand

An audit of your site and online presence, and the entry point to everything we help with.

Researched and quality-checked by our audit system, with every finding labelled by its evidence. Want a person's read? Add an Expert review. The Base report runs 30+ pages. The Base report covers site inventory, performance, security, SEO, accessibility, geographic scope and local position. The Full report adds competitors, positioning, pricing, marketability and more.

  • A short brief and the full PDF

    Both arrive by email.

  • Part 1: verified facts

    What we found, with sources.

  • Part 2: labelled judgment

    Our read, marked as judgment so you can tell it from the facts.

We Build and Run Our Own Products, and We'll Build Yours

The same people and practices you'd hire, running on real products of our own.

flayr home page, with the headline Your social media, handled.

Content platform · with Don Matthews and Firefly Events

flayr

One idea goes in, and finished content for every channel comes out.

Make on-brand posts with AI and schedule them to 13 platforms. We run our own brands on it.

  • AI content
  • Scheduling
  • 13 platforms
Visit flayr.social
Portunus documentation home page, describing a secret broker that agents ask for by name.

Agent framework · Open-source secret broker

Pantheon + Portunus

An AI crew that ships software, and a broker that keeps secrets out of its reach.

Pantheon is the agent layer behind how we plan, build, test, and ship. Portunus, its open-source piece, injects a secret only at the execution boundary, never inside an LLM or agent context.

  • AI agents
  • Secret broker
  • Open source
See the case study
The Hive documentation site for the Claude Code plugin.

Spec-driven dev plugins · Built by Don Matthews at Firefly Events

Hive

A coordinated team of AI specialists for planning, building, testing, and review.

A public Claude Code plugin that gives agent work the discipline of a real software team, from kickoff to ship. Our own engineering runs on it.

  • Claude Code
  • Codex
  • Multi-agent
Read about Hive
tools.mdostal.com home page, listing live open-source tools.

Free, open-source utilities

tools.mdostal.com

Small, sharp tools, built and shipped in public.

Live utilities including Allergy Locator, Mapstack US map layers, and a component framework for drone property work.

  • Open source
  • Live tools
  • Public repos
Browse the tools
The Audit Report page on mdostal.com, with the headline Know Where You Actually Stand.

Separate product · Start here

Audit Report

An audit of your site and online presence, delivered by email.

A short brief plus the full PDF: verified facts with sources, then labelled judgment. Researched and quality-checked by our audit system. The Base report runs 30+ pages.

  • Performance
  • Security
  • SEO
  • Email delivery
See the report
The Dragon Shop early access page at shop.mdostal.com.

Merch · Opening soon

The Dragon Shop

Dragon-branded, 3D-printed maker goods, designed, printed, and shipped by hand.

Our own storefront, powered by Mercatus Liber, our open-source commerce project. The early access list is open now.

  • 3D printing
  • Printed to order
  • Mercatus Liber
Get early access

Slide 1 of 6: flayr

See the full showcase →

What I'm Building Right Now

I built my own AI crew that plans, writes, tests, and ships software with me — and a separate piece that hands that crew passwords and API keys safely, so nothing sensitive ever sits exposed where an AI could read or leak it.

Pantheon

Umbrella

The crew — umbrella platform

The shared agent/plugin layer the pieces below plug into — not a single product, the crew itself.

Portunus

Live · Open-source

Credential broker

A boundary-only secret broker — reference a secret by name, and the value is injected only at the execution boundary, never inside an LLM or agent context.

Heimdall

In active build

AI provider routing

Health-aware routing across AI provider lanes — tracks what’s up, down, or out of credit, and recovers automatically.

Consus

In active build

Decision surface

Reads the crew’s open decisions and renders a verdict — the human-in-the-loop review layer for what the agents can’t rubber-stamp themselves.

Dostal Swarm / Orchestration

Shipping through the rest of 2026

Multi-agent orchestration

Swarm tooling and the orchestration layer tying the individual pieces into one working crew.

Proof & Depth

Two ecosystems built end-to-end, mobile releases shipped across a dozen clients, and the client work underway right now.

Frontiers Market Ecosystem

Head of Engineering & Principal Architect

Edge AI NVR System

Raspberry Pi clusters for capture/recording with custom NVR software, RTSP video pipelines, and Nvidia Jetson for on-device computer-vision inference; store-and-forward for offline operation. Proprietary hardware architecture for livestock monitoring.

Raspberry Pi
Nvidia Jetson
RTSP
Python
Computer Vision
Edge AI

Escrow & Payment Rails

Stripe Connect "Separate Charges and Transfers" for trustless escrow on six-figure livestock transactions.

Stripe Connect
Node.js
PostgreSQL
Financial Architecture

Livestock Mobile App

Native Swift app with on-device computer vision (Core ML), cattle identification, offline-first with store-and-forward sync.

Swift
Core ML
iOS
Computer Vision
Offline-First

Since removed

Marketplace Platform

Multi-tenant cattle trading platform with registry, lineage tracking, real-time inventory.

React
Next.js
TypeScript
PostgreSQL
Real-time

Main Site

Marketing and landing pages for the Frontiers Market ecosystem.

Next.js
React
Tailwind CSS
Vercel

Firefly Events Ecosystem

Co-founder & CTO

Shindig

Kotlin Multiplatform event discovery app. Aggregates Ticketmaster, Eventbrite, Facebook. Geo-spatial search, 8000+ daily events.

Kotlin Multiplatform
Compose
PostgreSQL
API Integration
Geospatial

Reserved

Multi-tenant SaaS for venue reservation management. Dynamic rules engine for complex regulatory compliance (NYC block laws).

React
Node.js
PostgreSQL
Rules Engine
Multi-tenant

Tabletop Archive (TTA)

P2P rental marketplace for gaming equipment. Stripe escrow, state machine inventory, shipping verification.

React
Node.js
Stripe
State Machine
P2P Marketplace

Firefly Main

Company website for the Firefly Events ecosystem.

Next.js
React
Tailwind CSS

Mobile Releases

Shipped mobile apps and platforms across clients and ecosystems.

Kohl's

Mobile DevOps pipelines and CI/CD platform engineering for a national department-store chain’s mobile commerce apps.

DanCenter

Hybrid mobile app for a European vacation-rental marketplace — property discovery and booking workflows.

Key Concierge

Hybrid mobile app (iOS/Android) for a concierge services platform.

Frontiers Market
Since removed

Native iOS app for cattle ID and marketplace management, with on-device computer vision and offline-first sync.

NV Energy

Mobile apps and web portals for utility account management, payments, and service stats.

Client Releases

Fractional-CTO client engagements — separate from the ecosystems above, tracked here at whatever stage they're actually at.

Want This Built for You?

Everything above ships through the same fractional-CTO engagement model — embedded technical leadership sized to what your company actually needs, from a few hours a month of advisory to full interim coverage.

More detail: résumé, portfolio, and the companies wall.